main.js

"use strict";

const {app} = require("electron");
const {start, getLastWindow, client, consts} = require("./index");

// edge case when the program is launched without arguments
if (process.argv.length == 1) {
    app.requestSingleInstanceLock();
    app.quit();
    return;
}

if (process.argv[3] === "true") {
    // Lock
    const singlesInstanceLock = app.requestSingleInstanceLock();
    if (!singlesInstanceLock) {
        app.quit();
        return;
    }

    // Someone tried to run a second instance, we should focus our window.
    app.on("second-instance", (event, commandLine, workingDirectory) => {
        client.write(consts.targetIds.app, consts.eventNames.appEventSecondInstance, {
            secondInstance: {
                commandLine: commandLine,
                workingDirectory: workingDirectory
            }
        })
        const lastWindow = getLastWindow()
        if (lastWindow) {
            if (lastWindow.isMinimized()) lastWindow.restore();
            lastWindow.show();
        }
    });
}

// Command line switches
let idx = 4;
for (let i = idx; i < process.argv.length; i++) {
    let s = process.argv[i].replace(/^[\-]+/g, "");
    let v;
    if (
        typeof process.argv[i + 1] !== "undefined" &&
        !process.argv[i + 1].startsWith("-")
    ) {
        v = process.argv[i + 1];
        i++;
    }
    app.commandLine.appendSwitch(s, v);
}

start();